Authors' Affiliations: Cancer Prevention Institute of California, Fremont, California; Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania; and Department of Epidemiology, Shanghai Cancer Institute and Cancer Institute of Shanghai Jiaotong University, Xuhui, Shanghai, China

Authors' Affiliations: Cancer Prevention Institute of California, Fremont, California; Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania; and Department of Epidemiology, Shanghai Cancer Institute and Cancer Institute of Shanghai Jiaotong University, Xuhui, Shanghai, China

Authors' Affiliations: Cancer Prevention Institute of California, Fremont, California; Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania; and Department of Epidemiology, Shanghai Cancer Institute and Cancer Institute of Shanghai Jiaotong University, Xuhui, Shanghai, China

Authors' Affiliations: Cancer Prevention Institute of California, Fremont, California; Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania; and Department of Epidemiology, Shanghai Cancer Institute and Cancer Institute of Shanghai Jiaotong University, Xuhui, Shanghai, ChinaAuthors' Affiliations: Cancer Prevention Institute of California, Fremont, California; Division of Cancer Control and Population Sciences, University of Pittsburgh Cancer Institute; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania; and Department of Epidemiology, Shanghai Cancer Institute and Cancer Institute of Shanghai Jiaotong University, Xuhui, Shanghai, China